<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>
<body>
 <script>
  //输出1~100
  let i =1
  while(i <= 100){
  document.write(`这是第${i}个数<br>`)
  i++
  }
 </script> 
</body>
</html>